Patents by Inventor Denis Dumora

Denis Dumora has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rigid electrical insulator including a lightly tempered soda-lime glass dielectric
    Patent number: 4757162
    Abstract: Rigid electrical insulator including a soda-lime glass dielectric with an average thickness of 10 to 15 mm, exhibiting a substantially parabolic stress curve, wherein the maximum value of the surface compression stresses at any point in the part falls within the range of 30 to 80 MPa, while the maximum value of the internal tensile stresses at any point in the part falls within the range of 15 to 40 MPa.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: July 12, 1988
    Assignee: Ceraver
    Inventors: Denis Dumora, Jean-Paul Parant, Laurent Pargamin
  • Method of fixing a malleable metal sleeve on a rod of composite material
    Patent number: 4656720
    Abstract: The present invention provides a method of fixing a sleeve (3) of malleable metal on a rod (10) of composite material, said sleeve comprising a cylindrical internal housing (6) in which an end (11) of said rod (10) is received. A compression operation is performed causing the sleeve to be stretched in a continuous manner over annular zones of the sleeve substantially from the inlet of the sleeve and substantially up to the end of the rod in such a manner as to cold draw the metal of the sleeve around the rod without stretching the composite material beyond its elastic strain limit.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: April 14, 1987
    Assignee: Ceraver, S.A.
    Inventor: Denis Dumora